EP1836400A1 - Dispositif et procede d'entretien d'unites de refoulement hydrostatique en fonction de leur etat - Google Patents

Dispositif et procede d'entretien d'unites de refoulement hydrostatique en fonction de leur etat

Info

Publication number
EP1836400A1
EP1836400A1 EP06819023A EP06819023A EP1836400A1 EP 1836400 A1 EP1836400 A1 EP 1836400A1 EP 06819023 A EP06819023 A EP 06819023A EP 06819023 A EP06819023 A EP 06819023A EP 1836400 A1 EP1836400 A1 EP 1836400A1
Authority
EP
European Patent Office
Prior art keywords
unit
hydrostatic
data
communication unit
evaluation unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06819023A
Other languages
German (de)
English (en)
Inventor
Wilfried Eichner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Rexroth AG
Original Assignee
Brueninghaus Hydromatik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brueninghaus Hydromatik GmbH filed Critical Brueninghaus Hydromatik GmbH
Publication of EP1836400A1 publication Critical patent/EP1836400A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2201/00—Pump parameters
    • F04B2201/08—Cylinder or housing parameters
    • F04B2201/0802—Vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/50—Presence of foreign matter in the fluid

Definitions

  • the invention relates to an apparatus and a method for condition-dependent maintenance of hydrostatic displacement units.
  • a pump unit with a pump and an electric motor which drives the pump known.
  • a digital motor control is provided, which is connected via a bus to a digital communication unit having an Internet protocol-based interface, so that ultimately the Pump unit via a digital network, an intranet or the Internet is controllable.
  • a disadvantage of the prior art resulting from DE 100 18 866 A1 is that the pump unit is not controlled directly, but via the motor control, which can be remote-controlled via the digital communication unit.
  • the pump unit itself has at least one sensor, such as a pressure sensor, a differential pressure sensor or a temperature sensor whose output signal can be interrogated via the communication unit.
  • directly related to the operation of the pump or the pump unit data such as surface vibrations of the housing and degree of contamination of the hydraulic fluid are not detected in the pump unit according to the document DE 100 18 866 Al.
  • the present invention has the object to overcome the disadvantages of the prior art and to provide an apparatus and a method for detecting failure phenomena, as well as for the establishment of service intervals and for the analysis of damage characteristics in hydrodynamically operated machines.
  • Claim 1 or claim 15 relate to a device or a method for condition-dependent maintenance of hydrostatic displacement units, in particular operated as a pump or motor axial piston machines.
  • acceleration sensors and / or contamination degree sensors are mounted on the hydrostatic displacement unit, which detect vibration data or contamination data of the hydrostatic displacement unit.
  • the sensors are connected to an evaluation unit, which temporarily stores the vibration data or contamination data, wherein a communication unit connected to the evaluation unit is provided on the hydrostatic displacement unit and transports this data further.
  • a first acceleration sensor prefferably be provided in a bearing region of the hydrostatic displacement unit, so that vibrations on the surface of the housing in the area of the bearing are detected metrologically.
  • a second acceleration sensor is provided in a Um Kunststoff Kunststoff Kunststoff the hydrostatic displacer unit, so that occurring cavitation is reliably detected when changing from the high pressure region to the low pressure region.
  • a first degree of contamination sensor which may be a particle sensor, is provided in the hydraulic circuit, so that abrasion can already be detected in the circulated hydraulic fluid.
  • a second pollution degree sensor in the leak oil line is advantageous when the first pollution degree sensor fails. This ensures that despite a failure of a contamination level sensor, the abrasion in the hydraulic fluid can still be determined.
  • an evaluation unit is provided in the device according to the invention, which can also be interrogated remotely via an intranet or an internet connection via a communication unit connected to it.
  • a web server is advantageously installed, which enables convenient and user-friendly access to the stored data, in particular to the contamination data and the evaluation of the surface vibrations.
  • the evaluated data with respect to the surface vibrations and the degree of soiling characterize the state of the hydrostatic displacer unit and the hydraulic fluid, and thus a necessary maintenance even before their due date, and especially displayed before a claim or from outside the web server can be queried so that any necessary downtime can be well agreed with the production process, as this can be made known with a certain lead time.
  • at least two acceleration sensors are mounted on the housing of the hydrostatic displacement unit, so that surface vibrations of the housing can be detected in two directions.
  • the communication unit has a web server
  • the web server can also be configured via the browser of the external, Internet-enabled PC.
  • Fig. 1 is a sectional view of a conventional axial piston machine for explaining the measured parameters
  • Fig. 2 is a schematic representation of the device according to the invention with an axial piston machine, which is connected via a web server with an external PC.
  • the axial piston machine 3 shown in FIG. 1 is in swash plate design with adjustable Displacement volume and a current direction and includes in a known manner as essential components a substantially hollow cylindrical housing 11 having an end open end (lower end in Fig. 1), a housing 11 attached to the open end occlusive housing cover 16, one also as a Hubusion designated swash plate 17, a control plate 18, a shaft 19 and a cylinder drum 20.
  • a suitable sensor which is not shown in this illustration, a swivel angle of the swash plate 17 is determined and to an evaluation unit 6 of the state-dependent maintenance of hydrostatic device 1 according to the invention Displacer 2 transmitted.
  • the shaft 19 is rotatably mounted in the housing 11 and engages centered through the cylinder barrel 20, wherein in a storage area 8 of the hydrostatic displacer unit 2, a first acceleration sensor 4 is provided on the housing 11 of the axial piston machine 3.
  • the cylinder drum 20 is non-rotatable with the shaft 19, but axially movable and thereby detachably connected by the shaft 19.
  • the shaft 19 is mounted on both sides of the cylindrical drum 20 in each case a rolling bearing 21.
  • a speed sensor is mounted, which is not visible in this illustration and determines the instantaneous speed of the shaft 19 and forwards to the evaluation unit 6.
  • a piston 23 is inserted axially movable in each case.
  • the pistons 23 each have a side facing away from the housing cover 16 side spherical head 24 which cooperates with a corresponding recess of a sliding shoe 25 to a hinge connection.
  • the piston 23 is supported on the swash plate 17.
  • the pistons 23 perform a stroke movement in the cylinder bores 22.
  • the height of the stroke is determined by the position of the swash plate 17, wherein the position of the swash plate 17 in the embodiment by an adjusting device 26 is adjustable.
  • This area of the axial piston pump 3 is also referred to as a reversing area 9.
  • a second accelerometer 4 is provided according to the invention.
  • the cylinder bores 22 are open via openings to the end face of the cylinder drum 20.
  • Cylinder drum 20 a sealing environment of
  • Control plate 18 and are connected during a rotation alternately with the unrecognizable control openings.
  • the axial piston machine 3 is provided, for example, for operation with oil as a hydraulic fluid in a hydraulic circuit 10.
  • the hydraulic circuit 10 of a hydrostatic displacement unit 2 the hydraulic fluid is circulated.
  • a first pollution degree sensor 5 which may be a particle sensor, is provided inside the hydraulic circuit 10 to detect the concentration of the abrasion therein.
  • a second pollution degree sensor 5 is provided within a leak oil line, said leak oil line is not shown in the present Figure 1 of the axial piston machine.
  • the cylinder drum 20 is rotated together with the piston 23 in rotation. If the swashplate 17 is pivoted into an inclined position relative to the cylinder drum 20 by actuation of the adjusting device 26, all pistons 23 perform strokes. Upon rotation of the cylinder drum 360 ° through each piston 23 passes through a suction and a compression stroke, with corresponding oil flows are generated, the supply and discharge via the openings, the unrecognizable control openings of the control plate 18 and the high pressure or low pressure connection, not shown ,
  • FIG. 2 shows a schematic representation of a device 1 according to the invention for condition-dependent maintenance of hydrostatic displacement units 2, in particular of a pump or motor Axial piston machines 3.
  • acceleration sensors 4 and / or pollution degree sensors 5 are mounted, the vibration data or pollution data of the hydrostatic displacer unit 2 detect.
  • the sensors are connected to an evaluation unit 6, which evaluates and temporarily stores the vibration data or contamination data, wherein a communication unit 7 connected to the evaluation unit 6 is provided, which transports this data further.
  • the communication unit 7 connected to the evaluation unit 6 is preferably integrated in an on-board electronic unit 12 or screwed thereto. Alternatively, it may also be attached to the housing 11 of the hydrostatic displacement unit 2 or be integrated in the evaluation unit 6 itself.
  • the inventively provided communication unit 7 is a digital communication unit in which a web server 13 is installed, which provides the evaluated data attached to the hydrostatic displacer unit 2 sensors, so that this either automatically or on request to one with the Internet 27 or a Intranet connected external PC 28 are transported, wherein this further transport takes place via an intranet or an Internet connection.
  • the web server 13 of the communication unit 7 is wired, connected to the Internet 27 by means of a LAN connection or wirelessly by means of a GSM modem or WLAN.
  • the evaluation unit 6 is connected to the communication unit 7 by means of a data bus or by means of a wireless connection, such as infrared or RFID connected. Also a transmission over the Ethernet is possible.
  • acceleration sensors 4 and / or contamination degree sensors 5 are attached to the hydrostatic displacement unit 2, whereby vibration data or contamination data of the hydrostatic displacement unit 2 are detected. These data are buffered in an evaluation unit 6.
  • a communication unit 7 is attached, which is connected to the evaluation unit 6 and further transports the detected vibration data or contamination data.
  • the communication unit 7 is integrated into a mechanical or electrical controller 14, 15.
  • At least one first acceleration sensor 4 is mounted in a bearing area 8 of the hydrostatic displacement unit 2 and a second acceleration sensor 4 is mounted in a reversing area 9 of the hydrostatic displacement unit.
  • a first pollution degree sensor 5 is placed in a hydraulic circuit 10 of the hydrostatic displacement unit 2 and a second pollution degree sensor 5 is placed within a leak oil conduit.
  • the communication unit 7 connected to the evaluation unit 6 is fixed to a housing 11 of the hydrostatic displacement unit 2 or screwed to an on-board electronics 12 of the hydrostatic displacement unit 2.
  • the invention is not limited to axial piston machines in swash plate design and is also applicable, for example, for axial piston machines in bent-axis design or other hydrostatic displacement units with a closed or open hydraulic circuit applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne un dispositif (1) et un procédé d'entretien d'unités (2) de refoulement hydrostatique, en particulier de machines (3) à piston axial utilisées comme pompe ou comme moteur, et ce en fonction de leur état. Des détecteurs d'accélération (4) et/ou des détecteurs (5) de degré d'encrassement sont installés sur l'unité (2) de refoulement hydrostatique, saisissent des données de vibration ou des données d'encrassement de l'unité (2) de refoulement hydrostatique et sont reliés à une unité d'évaluation (6) qui conserve en mémoire les données de vibration et les données d'encrassement. Une unité de communication (7) reliée à l'unité d'évaluation (6) transporte ces données à distance.
EP06819023A 2005-12-13 2006-12-12 Dispositif et procede d'entretien d'unites de refoulement hydrostatique en fonction de leur etat Withdrawn EP1836400A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005059566.9A DE102005059566B4 (de) 2005-12-13 2005-12-13 Vorrichtung und Verfahren zur zustandsabhängigen Wartung von hydrostatischen Verdrängereinheiten
PCT/EP2006/011950 WO2007068447A1 (fr) 2005-12-13 2006-12-12 Dispositif et procede d'entretien d'unites de refoulement hydrostatique en fonction de leur etat

Publications (1)

Publication Number Publication Date
EP1836400A1 true EP1836400A1 (fr) 2007-09-26

Family

ID=37836622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06819023A Withdrawn EP1836400A1 (fr) 2005-12-13 2006-12-12 Dispositif et procede d'entretien d'unites de refoulement hydrostatique en fonction de leur etat

Country Status (4)

Country Link
US (1) US8082125B2 (fr)
EP (1) EP1836400A1 (fr)
DE (1) DE102005059566B4 (fr)
WO (1) WO2007068447A1 (fr)

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KR101398705B1 (ko) 2010-02-23 2014-06-19 아르테미스 인텔리전트 파워 리미티드 유체 작동 기계 및 유체 작동 기계를 작동시키는 방법
GB2477997B (en) 2010-02-23 2015-01-14 Artemis Intelligent Power Ltd Fluid working machine and method for operating fluid working machine
JP5844936B1 (ja) * 2015-07-27 2016-01-20 善郎 水野 タイムシフト再送システム
DE102017103168B3 (de) 2016-11-08 2018-03-01 Beatrice Saier Dosiereinrichtung
CN107676251A (zh) * 2017-10-13 2018-02-09 合肥国智德电子科技有限公司 一种检测水泵和阀门故障的装置及其方法
GB2572325B (en) 2018-03-22 2021-02-17 Keymed Medical & Industrial Equipment Ltd Pump monitoring system
JP7412890B2 (ja) * 2019-03-26 2024-01-15 株式会社小松製作所 油圧機器の検査装置、油圧機器の検査システム、作業車両および油圧機器の検査方法
AU2021349932B2 (en) * 2020-09-25 2024-10-17 Cornell Pump Company LLC Mounting pocket for remote equipment monitoring device
EP4513151B1 (fr) 2023-08-21 2025-11-12 Danfoss A/S Procédé de surveillance d'une machine rotative conçue pour le transfert d'énergie ayant une pluralité de sous-systèmes

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GB2190198A (en) 1986-04-28 1987-11-11 Vipac Pty Ltd Vibrational analysis system for a machine
DE9420962U1 (de) 1994-12-31 1995-02-23 Klotz, Markus, 75242 Neuhausen Doppelkolbenpumpe
DE19646299A1 (de) * 1996-11-11 1998-05-14 Bosch Gmbh Robert Verfahren zur Decodierung von komplementären Codes
DE19951961A1 (de) * 1999-10-28 2001-05-03 Festo Ag & Co Filtergerät zum Filtern von Druckluft
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US7757562B2 (en) * 2002-10-28 2010-07-20 Mbh Data Source Technique and apparatus for detecting and monitoring internal defect conditions of mud pumps
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US6882960B2 (en) * 2003-02-21 2005-04-19 J. Davis Miller System and method for power pump performance monitoring and analysis
DE10322220C5 (de) * 2003-05-16 2010-10-14 Lewa Gmbh Störungsfrüherkennung an Pumpenventilen
US7043975B2 (en) * 2003-07-28 2006-05-16 Caterpillar Inc Hydraulic system health indicator
DE10334817A1 (de) * 2003-07-30 2005-03-10 Bosch Rexroth Ag Vorrichtung und Verfahren zur Fehlererkennung an Pumpen
JP4542819B2 (ja) 2004-05-21 2010-09-15 株式会社小松製作所 油圧機械、油圧機械の健康状態を監視するためのシステム及び方法

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Also Published As

Publication number Publication date
US20090229455A1 (en) 2009-09-17
DE102005059566A1 (de) 2007-06-14
WO2007068447A1 (fr) 2007-06-21
US8082125B2 (en) 2011-12-20
DE102005059566B4 (de) 2022-04-21

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